Question

Nitrogen doped carbon dot synthesized from urea and citric acid

Answer 1

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nitrogen doped carbon dots (NCDs) were synthesised from citric acid and urea via a previously reported microwave assisted route. The NCDs shows emission maximum at 500 nm on excitation at 400 nm. ... However, Ascorbic acid (AA) can recover the fluorescence of Fe3+ quenched NCD with detection limit as low as 96 μM